M Rutty Holdings Pty. Ltd.

Any device whose MAC address begins with 4C:32:D9 has a network interface built by M Rutty Holdings Pty. Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

4C:32:D9

Organization

M Rutty Holdings Pty. Ltd.

Address

Unit 1, 4 Beaumont Road Mount Kuring-Gai New South Wales AU 2080

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.